48 CFR §1329.203-70

1. (a)The Office of Acquisition Management has obtained a permit from the U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives enabling DOC and its contractors to purchase spirits (e.g., specially denatured spirits) tax-free for non-beverage Government use.
2. (b)When purchasing spirits for non-beverage use by DOC personnel, the contracting officer shall attach a copy of the permit to the contract. Upon receipt of the spirits, the contractor shall return the permit to the contracting officer unless future orders are anticipated.